/**
  * Record a slug history from a given object in a standard way
  * 
  * @param DataObject $object
  * @param string $slug
  * @return int
  */
 public static function recordFromObject(DataObject $object, $slug)
 {
     if (!$object->ID) {
         return;
     }
     $history = new SlugHistory();
     $history->RecordID = $object->ID;
     $history->ObjectClass = $object->ClassName;
     $history->Slug = $slug;
     return $history->write();
 }